Not a low-water desert tree. Requires substantial, deep irrigation in Phoenix, especially during establishment and summer. Water broadly beneath and beyond the canopy, allowing the upper soil to partially dry between irrigations.
Size
60-75 ft tall × 40-50 ft wide
Habit
Upright tree – single-trunk
Toxicity
Toxic — Pets & Livestock
Description
Northern red oak is a large eastern North American shade tree with pointed, lobed leaves and acorns. Quercus rubra is poorly adapted to Phoenix’s extreme summer heat and alkaline soils, despite its cold hardiness.
Bloom Time
Spring
Deciduous / Evergreen
Deciduous
Special Features
Attracts Birds, Drought Tolerant, Fall Color
Growth Rate
Moderate to fast
Growth Habit
Upright tree – single-trunk
Mature Size
60-75 ft tall × 40-50 ft wide
Flower Color
Yellow-green
Foliage Color
Dark green; red to orange in fall
Landscape Use
Desert / Xeriscape, Specimen / Accent
Garden Style
Desert / Xeriscape, Pollinator / Wildlife
Soil
Moist Soil, Prefers Acidic, Well-Drained
Companion Plants
Dwarf mondo grass, In a protected, Inland sea oats, Irrigated Phoenix setting
Toxic — Pets & Livestock
Acorns and foliage toxic to livestock if ingested (tannins)
Care Instructions
Light: Full sun in suitable climates; in Phoenix, avoid reflected heat and provide afternoon protection for young trees.
Water: Not a low-water desert tree. Requires substantial, deep irrigation in Phoenix, especially during establishment and summer. Water broadly beneath and beyond the canopy, allowing the upper soil to partially dry between irrigations.
Soil: Deep, moist, well-drained, acidic to slightly acidic soil. Phoenix’s alkaline and caliche soils often cause nutrient deficiencies and restrict rooting.
Mature size: Typically 60–75 feet tall and 45–60 feet wide in suitable climates; growth and longevity may be substantially reduced in Phoenix.
Bloom: Small, inconspicuous flowers in spring as leaves emerge; acorns mature over two growing seasons.
Evergreen / deciduous: Deciduous.
Growth rate: Moderate to fast under favorable conditions; often slow or stressed in Phoenix.